Sökning: "Radio"
Visar resultat 21 - 25 av 1093 avhandlingar innehållade ordet Radio.
21. Generalized Bandpass Sampling Receivers for Software Defined Radio
Sammanfattning : Based on different sampling theorem, for example classic Shannon’s sampling theorem and Papoulis’ generalized sampling theorem, signals are processed by the sampling devices without loss of information. As an interface between radio receiver front-ends and digital signal processing blocks, sampling devices play a dominant role in digital radio communications. LÄS MER
22. Generalized Frequency Hopping in Cellular Radio Systems
Sammanfattning : .... LÄS MER
23. Frisk och stark med skolradion : Pedagogik och retorik i hälsoprogram 1930-1959
Sammanfattning : This dissertation deals with the history of the Swedish School Radio Broadcasting service from its start in the end of the 1920s through the 1950s. The focus of the research is radio programmes for health education. LÄS MER
24. Dielectrically Loaded Quad-ridge Flared Horns for Ultra Wideband Reflector Feed Applications in Radio Astronomy
Sammanfattning : Reflector-based radio telescopes are used as tools for observations in both radio astronomy and space geodesy. To observe the weak sources in space, highly sensitive receivers, fronted by optimized reflector feeds, are therefore needed. LÄS MER
25. Radio Network Planning and Resource Optimization : Mathematical Models and Algorithms for UMTS, WLANs, and Ad Hoc Networks
Sammanfattning : The tremendous popularity of wireless technologies during the last decade has created a considerable expansion of wireless networks both in size and use. This fact, together with a great variety of mobile devices and numerous di®erent services that are becoming increasingly resourcedemanding, have attracted the attention of many researchers into the area of radio resource planning and optimization. LÄS MER